Sewing-machine.



H. HOUSTON. SEWING MACHINE.

APPLIOATION FILED JUNE 2,1911.

Patented July '14, 1914,

2 SHEETS-$HEET 1.

Mfwssm:

H. HOUSTON.

SEWING MACHINE. APPLICATION FILED JUNE 2, 1911.

Patented July 14, 1914 2.SHEET8-SHEET 2.

noon HOUSTON, or LAWRENCE, massacnusn'rrs.

SEWING-MACHINE.

Specification of Letters Patent.

Patented July 14, 1914.

Application filed J'une 2, 1911. Serial 0. 630,801.

To all whom it may concern:

Be it known that I, HUGH-HOUST N, a

citizen of the United States; residing at Lawrence, in the county of Essex and State of Massachusetts, have invented certain new ,and useful Improvements in Sewing-Machines, of which the following is a specification.

My invention relates to sewing machines andpwhile'it is especially adapted for mill sewing machines suitable for sewing t0- gether'the ends of rolls of cloth during the handling thereof in factories, the principle a may be used in connection with any sewing machine. a

The rincipal advantage of'my device is the facility with; which long stitches-can be V made, more particularly as this can be done in connection with a. continuous feed.

As is well known, there are several types of-sewing machine actions between the feed and the operation of the needle. A well.

known sewing machine action has a needle with a vertical reciprocating motion in connection with a'looper 'or other thread catching' device for. catching and holding the sewing-thread. The most common feed principle comprises devicesfor advancing the cloth and also a device suchas a presser foot for. holding 'itistationary *Wh-llB the needle enters and withdraws therefrom, such' device being released when'the needle leaves the cloth allowing it tothen advance for the .next-puncture; W In thee patent-to 'Houston', "Nog 920,141, May 4, 1909, is shown 'a" construction wherein -the devices" for holding the needle are sufficiently elastic to permitits operation in connection with" a "continuous feed device,

to a'limit'ed-degree and' being brought back to oliginal positionby the elasticity of the holding parts afterit has been with drawn from the cloth. This constructionpermits the "use of a continuousfifed E but does 'not permit ax verylong ."stit'ch to be made It do'es show elastic, needle holding device and *1 prefer 'to use this construction in*. the present device.- 1

' My present device" s1 of'such character that '=in connection with acontimioiis feed 'of any-type; a stitch of "great length can be made; without any undue stress on the parts. v Theprinciple involved is td'subje'ct' the on tire head to a sliding action corresponding this modification from the side;

the needle travelingforward with the feed of base B is milledlor planed to end, a'rear'brackt 21 inwhic with the travel of the. feed, in connection with needle operating mechanism which causes the needle to enter the cloth at the beginning of the slide motion of the head and to leave it as the slide motion terminates. In this way, a stitch of almostany length; can be obtained. J U

y In the drawings, Figure l'is a top view of. the head and part of the'feed devices. Fig.

2 is a front elevation of portions of'the head 5 and of the feed pulley. Fig. 3 is an 'eleva tion ofia portion of the head and feedmech anism from the back or driving side ofithe' machine the spokes of the removable -pulley being shown as .cut "away and the: hub being shown-in section as on line X-Y of Fig. 1. Fig. 4 shows fro'm'the back a modification of the feed construction, and Fig. 5-shows The construction of the head and needle.

I operating mechanism; may be. anynow u'sedi- Y but I .preferto use "the c'onstruction shown in the patent to Houston above mentioned wherein a ion toss is used 'to-hold fthet needle. bar instead ofa .rigid construction whereby 'with the elasticity of this boss and. of'the needle barso suspended" there is considerablc' give. of the needle in its action. with reference to the cloth. L

A represents=the tcolumnv'or' post which supports the feed and driving. mechanism" ass well as the head. This columnisaflat at the} top 20 and isVinillednr. planed smooth I enough to present? 'asmooth surface to and I to permit. the bottomof the basee-B of the head, whichis also-milled o1 planed ".to'fa 1 true surface, 'to'slide thereon with a minimum of friction; This base B has slots IO-and 11 through which pa'ss st uds-12 and13'into:

the top 20 of column A; A strip "adjoining" and connecting slots 10 and 11 ofrt'op surface resent 1a true' surface at 14 f oiieach side F'o slots 10 and*11-.--:'Studs I21andi13'icarry' washers 15 and lfi'which rest. on'tlie true surface 114-, and 10o are'held'in place by;nuts 17 and -18.;---By adjusting nuts'.'.17 and 18, thebase of the headcan be kept'fin slidablerelation with the top 1 20" of coiumn A.= 'BaseB supi orts atone:

'. are suitabl 1105 bearings for the 'needleidriving shaft 22.1 Base B also supports the middle bracket-1:23 which'has ba'rings for the other end of shaft 22. It also supports a front bracket 24 which preferably is extended to form the 11 needle posts 30 and 31 which carry between which'is slidably mounted thle needle slide 32. Needle driving shaft 22 carries and is driven by a removable pulley 50. Needle slide 32 has along elasticboss 33 which supports the needle bar 34 which carries the needle 35 as in the Houston patent described.

In alinement with needle driving shaft 22 and supported by, bearin so in front 40 which carries at its front end a looper- 41 in operative 1 relationwith :needle 35, the same being a well" known construction. I prefer to cause needle slide 32 and the needle to be. given a reciprocating action by means of apitman 45 which is actuated by means of a pin, not shown, which connects disks -62 and 63 carried respectively by the rear end 'o'f loopershaft 40 and the front end of needledriving shaft 22: From this construction it will be seen-that as needle driving shaft 22 is operated-by means of pulley 50, and as it transmits 'positively motion tothe needle and looper, the needle and loo-per. cooperate. Preferably the needle operates through a slot-47ina throat plate 48 and the looper is located underneath this plate.

For the edge of whose rim adjoins throat plate 4.8 and I preferably use such a pulley C provided with: pins which are projected through the rim-thereof by means of a cam or.other contrivance while-passing on each side 'of-the needle and traveling with the top of pulley C'a'nd which are retracted when passing-with the bottom thereof. Thereby the-cloth to be sewed is carried forward by the points of the pins while they project and -is firmly held thereby until the needle has been'p-assed. After passing the needle,

- the 'pointsof' the pins are withdrawn permittin-g'th cloth to drop. This pin pulley construction isalso well known being shown in: patent to Ashton, December -10,

1907, :No. 873,338. This 'feed pulley C is preferably-driven by any'suita'ble gearing,

belts or other 'devices,--'not shown, from the main driving-pulley D of the machine.

flPhis-main dr ving-pulley-D, by means preferably'of a-belt 51, drives removable pulley 50 and thereby needle 'driving shaft 22.

To cause the head: slidably supportedas it is by base B to 'be- "ven. a reciprocating horizontal motion confo tion to the travel of feed'pulley C, I prefer to mount an eccentric 52' on needle-drlvmg. shaft 22; .The. eccentric strap 53 of this eccentric is carried by an eccentric rodv 54 whichns pivot'ally attached to an arm E which 'is fixed to' 'a bracket attached to column A.: l The 5 result of this connectionis that as needle'driving shaft 22 revolves,

it forces the whole headwto slide horizonfeed,- I 'mayuse a pulley G the used in rming in one direc amass? tally guided by bolts 12 and asshown by the" some lines' in Figs. 1,2 and a The length of this sliding is determined by the size and construction of eccentric 52. It is necessary or at any'..rate desirable that the parts should be so adjusted that the needle 35 should pass downward into the material as the head begins to move in the direction with the feed wheel C and that before the end of the slide of the' head, needle 35 should withdraw upward therefrom thereby avoiding any puckering of the cloth. I prefer a belt connection between pulleys 50 and D as that permits ofpulley 50 moving with the head as shown in Figs.

1, 2 and 3. It is also a simple matter to change the size of pulley 50 and thereby to change the adjustment. The len h of the slide of the head determines the ength of the stitch and this is adjusted by changing the size of the eccentric 52 and its strap 53. Ifthe length of this stitch is to be decreased or increased, the speed of the needle with reference to the speed of thefeed pulley should be changed to correspond and this change is made by changing the size of pulley 50.

The type of feed is immaterial and while it is preferable that it should be driven from the samesource of poweras the needle, it might be driven from a different source. All changes in the relation of the parts are made on the head, 1

feed wherein a straight throat plate 70' is lace of the curved throat plate 48 and pre erably a presser foot 71 is used to hold the cloth down as it passes-under needle 35.

with 'felt or other suitable material and This feed comprises two rolls 72 and 7 3 which may be elther-fluted, .or covered 4 In Fig. 4, I show a different form of which may be driven through a gear, shaft or pulley from any source of power, as forinstance by connections-from main pulley D. Either feed roll, as the lower roll, may

be driven positively and the other may be a friction roll or bothmay, beJpositively' g driven. Feedroll 73' asses through a slot not shown, in throat p ate 70L: I

Feedpulley 73 should be pivoted to col umn A, and pulley 7 2, throat plate 70 and presser foot -71 must be supported b suitable standards and arms also attac ed to f column 'A' so that the head. I

I prefer the constructionqshowninFigs.

4 and .5 wherein feedpulley 72 is pivotallycarried byan arm 75 pivotedtoa standard 76 and presser foot. 71 is adjustablysu'p ported by arm 75. Throat plate 70=is fixedto' another arm 77 attached .to standard .76.

they will not move. with I A spring 78 between: arms '7 5 and 77 holds;-'

pulley 72. andpressrl'fobt 71 yieldingly against; feed pulley 73 whereby the cloth I f aq being sewed is held frictionally in places with each other and proximate the feed de- .vi'c es and having a needle drivin shaft and an eccentric carried by the needle drivin shaft and an eccentric strap carried by sai eccentric and pivotally connected b an eccentric rod to said bracket as descri ed.

2. In a sewing machine, the combination with continuous feed devices, of a head having a reciprocating needle and a thread catching device both in operative relation with each other and proximatethe feed devices, said head being provided with means whereby it is positively caused ,to move in one direotionparallel with the feed and back to its original osition,-together with driving means for t e head mechanism movable.

with the head.

3. In a sewing machine, the combination with a feed ulley provided with pins which are projecte through the rim and retracted therefrom as the pulley rotates, of a-head having a reciprocating needle and a looper in operative relation with each other and proxlmate the feed pulley, said head being and means whereby the head is slidable back and forth in a direction arallel with the movement of the feed pulley, ositively caused to move in one direction with a portion of the feed pulley andback to its originalposition, together with driving means for dthe head mechanism movable with the hea 4. In a sewing machine, the combination with a feed pulley provided with pins which are projected through the rim and are retracted therefrom at certain portions of the rotation as the pulley rotates, of a head slidable back and forth in a direction parallel with the movement of the feed pulley, means whereby the head is positively caused to slide back and forth in a direction parallel with the movement of a portion of the feed pulley, and driving means for the head mechanism movable with the head, together with a reciprocating needle and a looper in operative relation with each other and proximate the feed pulley, said needle being supported by the needle bar and a long boss whereby it is in elastic relation With the feed mechanism.

In testimony whereof I hereto affix my GARDNER W; PEARSON, a KATHRYN A. BARRm'r. 

